#include <iostream>
using std::cout;
using std::endl;

#include <string>
using std::string;

#include <vector>
using std::vector;

int main()
{
	const string s1("Carl");
	cout << s1.size() << endl;
	cout << s1.capacity() << endl;
	// s1 += "A";
	
	//string::const_iterator it1 = s1.begin();
	//s1 += "a";
	
	//int a = 1;
	//const int* pa = &a;
	// int* pa2 = pa + 1;
	// 这里涉及类型不变, 类似算数转换
	
	return 0;
}
